The appartment is the perfect spot for having a great time in Bangkok. Absolutly the best are the pools (5th and 40th floor) and the gym. Because it's not a hotel you have the pools nearly for yourselves. The boat shuttle to the Skytrain station is good too and if you don't wanna wait you can even have a walk over the bridge.
Julija and Lele were always available for us when we needed anything. Thanks to them and if we come back to Bangkok we would stay there again.